Astrolabe

The Astrolabe is a tool added by Professor Flaxbeard's Wondrous Steam Power Mod that is used to setting an Item Mortar's target. Pressing shift and right-clicking a location on the ground will save the location, which will be displayed below the item name on the Astrolabe's tooltip. Right clicking an Item Mortar with a targeted Astrolabe will aim it towards the set location.